Arachnoid cyst - cerebellopontine angle

Case contributed by Ammar Haouimi



Patient Data

Age: 30 years
Gender: Male

Small extra-axial cystic lesion at the left cerebellopontine angle (CPA) of CSF signal on all sequences with no restricted diffusion, displacing the facial/vestibulocochlear nerves in keeping with an arachnoid cyst.

Normal appearance of the cerebellum and cerebral hemispheres.

Case Discussion

MRI features of an arachnoid cyst of the left cerebellopontine angle displacing the facial/vestibulocochlear nerves.

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